Ключевые слова: alaska, arctic, base, beautiful, canada, circle, cloud, color, ecology, environment, expedition, green, hiking, hill, landscape, lichen, moss, mountain, nature, no, north, outdoor, peaceful, permafrost, polar, quiet, romantic, sanctuary, scenery, scenic, season, serenity, sky, summer, summit, sunrise, sunset, traces, travel, tundra, unusual, view, wonderful,